Hoisting tool for power plant

Abstract

The invention relates to the technical field of power plant equipment maintenance, in particular to a hoisting tool for a power plant, the hoisting tool for the power plant comprises a base frame, a hoisting assembly and a clamping assembly, the base frame is used for bearing an engine main body; the hoisting assemblies are arranged around the base frame, the lower ends of the hoisting assemblies are connected with the base frame, and the upper ends of the hoisting assemblies are connected with hoisting rods. The clamping assemblies are arranged on the periphery of the base frame and rotationally connected with the base frame, and the clamping assemblies can clamp the outer surface of the engine body or be separated from the engine body through rotation. The connecting piece is in sliding fit with the clamping rod, the posture of the engine body can be changed by adjusting the position of the connecting piece, the requirements of different working conditions such as horizontal placement and inclination in the overhauling process are met, and the convenience of maintenance operation is improved. According to the clamping assembly, overturning and attaching of a clamping block are achieved through a hinge, a closed clamping ring is formed through cooperation with a limiting rod, the engine body is fixed in all directions, and the problem that an existing tool is prone to shaking is thoroughly solved.

Description

Technical Field

[0001] This application relates to the field of power plant equipment maintenance technology, and in particular to a hoisting tool for power plants. Background Technology

[0002] In power production scenarios such as nuclear power plants, high-voltage motors serve as core power equipment, with rated voltages typically exceeding 1000V. They provide robust energy support through the synergistic effect of voltage and current. Since motor power is directly proportional to the product of voltage and current, the power of low-voltage motors is limited by the conductor's carrying capacity after reaching a certain level. Therefore, high-voltage motors have become crucial equipment for power plant energy supply.

[0003] High-voltage motors require regular comprehensive inspections and maintenance during long-term operation. However, the motor rotor, located inside the equipment and possessing immense overall weight, makes maintenance extremely difficult. While existing lifting tools can achieve basic motor lifting, they have significant drawbacks during maintenance: the motor is prone to multi-directional swaying, severely impacting the convenience and accuracy of maintenance operations. This can also lead to instability in the overall structure of the lifting tools, potentially causing components to detach and posing a serious threat to the safety of on-site personnel. Therefore, these tools fail to meet the dual requirements of safety and efficiency for power plant maintenance operations. Summary of the Invention

[0004] This application provides a lifting tool for power plants to solve the problems of easy shaking, insufficient safety, and low maintenance efficiency of existing lifting tools during motor maintenance.

[0005] This application provides a hoisting tool for power plants, including:

[0006] A base frame, which is used to support the engine body;

[0007] A hoisting assembly is disposed around the base frame, with its lower end connected to the base frame and its upper end connected to a hoisting rod;

[0008] A clamping assembly is disposed around the base frame and rotatably connected to the base frame, capable of clamping the outer surface of the engine body or separating from the engine body by rotation.

[0009] In one possible design, the hoisting assembly comprises two sets symmetrically arranged on opposite sides of the base frame, each set of the hoisting assembly comprising:

[0010] A welding seat, which is fixedly connected to the base frame;

[0011] There are two columns, and the lower end of each column is fixedly connected to the welding seat.

[0012] A clamping rod is disposed between the two columns and is used to connect the upper ends of the two columns.

[0013] The connector has a cavity inside and is sleeved on the clamping rod, slidingly engaging with the clamping rod. The connector adjusts the posture of the engine body by moving along the axial direction of the clamping rod.

[0014] In one possible design, at least two of the connectors are fitted onto each of the clamping rods.

[0015] In one possible design, the upper end face of the connector is provided with a lifting bracket, which is used to connect with the lifting rod.

[0016] In one possible design, the end of the clamping rod is connected to a mounting sleeve, which is fitted onto the column, and the clamping rod is vertically connected to the column through the mounting sleeve.

[0017] In one possible design, the clamping assembly includes:

[0018] The clamping block includes two clamping blocks, which are symmetrically arranged on opposite sides of the base frame. Each base frame extends along the length of the base frame and is connected to the base frame by a hinge. The clamping block can clamp the outer surface of the engine body or separate from the engine body by rotating.

[0019] The limiting rod includes two rods, which are symmetrically arranged on opposite sides of the base frame. Each limiting rod extends along the width direction of the base frame. The two ends of the limiting rod are connected to the two sides of the corresponding clamping block, so that the two clamping blocks and the two limiting rods together form a closed clamping ring.

[0020] In one possible design, connecting seats are mounted on opposite sides of the clamping block via connecting blocks, and clamping sleeves are provided on the connecting seats.

[0021] In one possible design, limit caps are respectively installed at both ends of the limiting rod, and the limit caps are used to prevent the limiting rod from slipping out of the clamping sleeve.

[0022] In one possible design, an auxiliary component is also included, which is detachably connected to the engine body. This auxiliary component includes:

[0023] The mounting bracket is U-shaped and is placed on top of the engine body. Bolts are provided on opposite sides of the mounting bracket. By tightening the bolts, the bolts are pressed against the outer surface of the engine body, thereby connecting the mounting bracket to the engine body.

[0024] The clamping seat is mounted on the mounting frame via a vertical rod;

[0025] An auxiliary mounting bracket is provided on the connector.

[0026] In one possible design, the end of the bolt near the engine body is provided with an anti-slip pad.

[0027] The beneficial effects of this application are as follows:

[0028] The power plant hoisting tool of this application has a connecting part in the hoisting assembly that slides with the clamping rod. The position of the connecting part can be adjusted to change the posture of the engine body, so as to meet the needs of different working conditions such as horizontal placement and tilting during maintenance, and improve the convenience of maintenance operations.

[0029] The clamping assembly uses hinges to flip and fit the clamping blocks together, forming a closed clamping ring with the limiting rod, which secures the engine body from all angles and completely solves the problem of existing tools being prone to shaking. The setting of the limiting cap further prevents the limiting rod from slipping out, ensuring the reliability of the clamping structure.

[0030] By setting up auxiliary components, it is convenient to call other lifting equipment to lift the engine body, place the engine body on the base frame, or remove the engine body from the base frame. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the overall structure of the hoisting tool for power plants provided in the embodiments of this application;

[0033] Figure 2 This is a schematic diagram of the structure of the hoisting assembly of the power plant hoisting tool provided in the embodiments of this application;

[0034] Figure 3 A schematic diagram of the connecting component of the lifting assembly of the power plant lifting tool provided in the embodiments of this application;

[0035] Figure 4 A schematic diagram of the structure of auxiliary components for a power plant hoisting tool provided in an embodiment of this application;

[0036] Figure 5 This is a schematic diagram of the clamping assembly of a power plant hoisting tool provided in an embodiment of this application.

[0037] Figure label:

[0038] 1. Base frame; 2. Engine body; 3. Lifting assembly; 301. Welding seat; 302. Column; 303. Mounting sleeve; 304. Clamping rod; 305. Connector; 306. Cavity; 307. Lifting hanger; 4. Lifting rod; 5. Lifting sleeve; 6. Auxiliary assembly; 601. Mounting bracket; 602. Bolt; 604. Column; 605. Connecting seat; 606. Auxiliary hanger; 7. Clamping assembly; 701. Clamping block; 702. Hinge; 703. Connecting block; 704. Clamping seat; 705. Clamping sleeve; 706. Limiting rod; 707. Limiting cap. Detailed Implementation

[0039] The technical solutions of this application will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] The following is combined with Figures 1-5 This describes the power plant hoisting tools provided in the embodiments of this application.

[0041] Reference Figure 1 As shown in the embodiment of this application, the power plant hoisting tool includes a base frame 1, a hoisting assembly 3, a clamping assembly 7, and an auxiliary assembly 6. The components work together to achieve stable hoisting and maintenance of the motor.

[0042] The base frame 1 serves as the basic load-bearing component of the entire lifting tool, used to place the engine body 2 and provide installation support for the lifting assembly 3 and clamping assembly 7. A placement area adapted to the engine body 2 is reserved above the base frame 1 to ensure the stability of the initial positioning of the engine body 2.

[0043] Reference Figure 2 , Figure 3As shown, the lifting assembly 3 is arranged around the base frame 1, with its lower end fixedly connected to the base frame 1 and its upper end used to connect the lifting rods 4, providing a core power transmission path for the lifting operation. The upper ends of multiple lifting rods 4 are integrated into the lifting sleeve 5. The lifting assembly 3 includes two sets symmetrically arranged on opposite sides of the base frame 1. Each set of lifting assemblies 3 includes a welding seat 301, a column 302, a clamping rod 304, and a connector 305. The welding seat 301 is welded and fixedly connected to the base frame 1, providing stable support for the column 302. There are two columns 302, and the lower end of each column 302 is fixedly connected to the welding seat 301, extending in the vertical direction. The clamping rod 304 is set between the two columns 302 to connect the upper ends of the two columns 302, realizing the lateral fixation of the columns 302. The connecting piece 305 has a cavity 306 inside, which is sleeved on the clamping rod 304 and slides in cooperation with the clamping rod 304. The connecting piece 305 can move along the axial direction of the clamping rod 304, thereby adjusting the posture of the engine body 2. For example, in the case where the engine body 2 needs to be kept horizontal or tilted to one side during maintenance.

[0044] To prevent the base frame 1 from tipping over during attitude adjustment, each clamping rod 304 is fitted with at least two connectors 305, ensuring hoisting balance through multi-point support. The upper end of the connector 305 is equipped with a hoisting hanger 307 for quick connection to the hoisting rod 4. An installation sleeve 303 is connected to the end of the clamping rod 304, and the installation sleeve 303 is fitted onto the column 302, allowing the clamping rod 304 to be vertically connected to the column 302 via the installation sleeve 303, ensuring the stability of the structural connection.

[0045] Reference Figure 5 As shown, the clamping assembly 7 is disposed around the base frame 1 and rotatably connected to the base frame 1. It is used to clamp the outer surface of the engine body 2 or to separate from the engine body 2, preventing shaking during motor hoisting and maintenance. The clamping assembly 7 includes two clamping blocks 701 symmetrically disposed on opposite sides of the base frame 1, and two limiting rods 706 symmetrically disposed on opposite sides of the base frame 1. The clamping blocks 701 extend along the length direction of the base frame 1 and are rotatably connected to the base frame 1 via hinges 702. They can be flipped to fit or separate from the outer surface of the engine body 2. The limiting rods 706 extend along the width direction of the base frame 1, and their two ends are respectively connected to the two sides of the corresponding clamping blocks 701, so that the two clamping blocks 701 and the two limiting rods 706 together form a closed clamping ring, achieving all-round fixation of the engine body 2.

[0046] Connecting seats 605 are mounted on opposite sides of the clamping block 701 via connecting blocks 703. Clamping sleeves 705 are provided on the connecting seats 605 for mounting with the limiting rod 706. Limiting caps 707 are mounted on both ends of the limiting rod 706. The size of the limiting caps 707 is larger than the diameter of the holes in the clamping sleeves 705, effectively preventing the limiting rod 706 from slipping out of the clamping sleeves 705 and ensuring the stability of the clamping structure.

[0047] Reference Figure 4 As shown, auxiliary component 6 is detachably connected to engine body 2 and is used to assist in lifting operations, facilitating the placement of engine body 2 on or removal from base frame 1. Auxiliary component 6 includes mounting bracket 601, connecting seat 605, and auxiliary hanger 606. Mounting bracket 601 is U-shaped and positioned above engine body 2. Bolts 602 are respectively provided on opposite sides of mounting bracket 601. By tightening the bolts 602, the bolts 602 are pressed against the outer surface of engine body 2, thereby achieving a detachable connection between mounting bracket 601 and engine body 2. Clamping seat 704 is mounted on mounting bracket 601 via upright 604. Upright 604 extends vertically to provide stable support for clamping seat 704. Auxiliary hanger 606 is provided on clamping seat 704, allowing for easy access to other lifting equipment to assist in lifting operations.

[0048] To improve connection stability and protect the surface of the engine body 2, an anti-slip pad is provided at the end of the bolt 602 near the engine body 2. The anti-slip pad is made of elastic wear-resistant material, which can increase the friction between the bolt 602 and the engine body 2 to prevent relative sliding, and also avoid surface scratches caused by direct contact between the bolt 602 and the engine body 2.

[0049] The installation and usage process of the lifting tools for power plants described in this application is as follows:

[0050] Place the U-shaped mounting bracket 601 of the auxiliary component 6 above the engine body 2, and tighten the bolts 602 on both sides of the mounting bracket 601 so that the anti-slip pads at the ends of the bolts press against the outer surface of the engine body 2, thereby achieving a fixed connection between the auxiliary component 6 and the engine body 2; connect the external lifting equipment through the auxiliary hanger 606, and lift the engine body 2 to the upper placement area of ​​the base frame 1 to complete the initial positioning.

[0051] Connect the lifting rod to the lifting bracket 307 at the upper end of the connector 305 to ensure a firm connection; adjust the connector 305 to a suitable position by sliding it along the axis of the clamping rod 304 according to the engine body posture required for maintenance work. Through the coordinated support of multiple connectors, ensure the stability of the engine body posture and avoid tipping over.

[0052] By flipping the clamping blocks 701 on both sides by hinge 702, the clamping blocks 701 are made to fit against the outer surface of the engine body 2; the two ends of the limiting rod 706 are respectively inserted into the clamping sleeves 705 on the clamping seats 704 on both sides of the clamping block 701, and the limiting caps 707 are installed on the two ends of the limiting rod 706 to prevent the limiting rod 706 from slipping off. At this time, the two clamping blocks 701 and the two limiting rods 706 form a closed clamping ring, realizing the all-round fixation of the engine body 2.

[0053] Connect external hoisting equipment via hoisting rod, start the equipment to hoist the base frame 1 and the fixed engine body 2 to the maintenance area; during maintenance, if it is necessary to adjust the posture of the engine body, the connecting piece 305 can be slid to the target position to ensure the accuracy of the maintenance operation; after maintenance is completed, remove the clamping component 7 and auxiliary component 6 in reverse order, and hoist the engine body 2 back to its original position.

[0054] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] In this application, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0058] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A hoisting tool for power plants, characterized in that The utility model relates to a lifting device for engine, which comprises: a base frame for bearing an engine body; a lifting assembly arranged around the base frame, with a lower end connected to the base frame and an upper end connected to a lifting rod; a clamping assembly arranged around the base frame, rotatably connected to the base frame, capable of clamping or separating from the outer surface of the engine body by rotation.

2. A hoisting tool for power plants according to claim 1, characterized in that The lifting assembly comprises two groups of lifting assemblies symmetrically arranged on opposite sides of the base frame, and each group of lifting assemblies comprises: a welding seat fixedly connected to the base frame; two vertical columns, with a lower end of each vertical column fixedly connected to the welding seat; a clamping rod arranged between the two vertical columns and connecting upper ends of the two vertical columns; a connecting piece with a cavity, sleeved on the clamping rod and in sliding fit with the clamping rod, capable of adjusting the posture of the engine body by moving along the axial direction of the clamping rod.

3. A hoisting tool for power plants according to claim 2, characterized in that At least two connecting pieces are sleeved on each clamping rod.

4. A hoisting tool for power plants according to claim 3, characterized in that An upper end surface of the connecting piece is provided with a lifting hanging piece for connecting with the lifting rod.

5. A hoisting tool for power plants according to claim 4, characterized in that An end of the clamping rod is connected with a mounting sleeve, which is sleeved on the vertical column, and the clamping rod is perpendicularly connected to the vertical column through the mounting sleeve.

6. A hoisting tool for a power plant according to any one of claims 1-5, characterized in that, The clamping assembly comprises: two clamping blocks symmetrically arranged on opposite sides of the base frame, each clamping block extending along the length direction of the base frame and connected to the base frame through a hinge, and capable of clamping or separating from the outer surface of the engine body by rotation; two limiting rods symmetrically arranged on opposite sides of the base frame, each limiting rod extending along the width direction of the base frame, and two ends of each limiting rod connected to two sides of the corresponding clamping block, so that the two clamping blocks and the two limiting rods jointly form a closed clamping ring.

7. A hoisting tool for power plants according to claim 6, characterized in that Opposite sides of each clamping block are respectively provided with a connecting seat through a connecting block.

8. A hoisting tool for power plants according to claim 7, characterized in that Two ends of each limiting rod are respectively provided with a limiting cap for preventing the limiting rod from slipping out of the clamping sleeve.

9. A hoisting tool for power plants according to claim 8, characterized in that The utility model further comprises an auxiliary assembly detachably connected to the engine body, which comprises: a mounting rack in the shape of a U-shaped frame arranged above the engine body, with opposite sides of the mounting rack respectively provided with a bolt, the bolt being screwed to tightly press against the outer surface of the engine body to connect the mounting rack to the engine body; a clamping seat mounted on the mounting rack through a vertical rod; an auxiliary hanging piece arranged on the connecting seat.

10. A hoisting tool for power plants according to claim 9, characterized in that An end of the bolt close to the engine body is provided with an anti-skid pad.

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